Welcome to APT Controls & Appliances Pvt. Ltd.

We are one of the leading manufacturer and exporter of water and geyser thermostats. The company has earned good reputation for quality, timely delivery and service wherever required. First product of the company, Stem Thermostat, 20 A, 230 V, 25 - 75°C, is ISI marked since 1994 (License no. CM/L  7059270 from Bureau of India Standards).

We endeavor to provide better customer satisfaction through quality products and timely delivery. Our excellence in the industry enable our clients to excel in their field of operation. Over the years, we have been catering to the requirement of a large clients base. Besides the domestic market, we also export our range of products to various countries.

Quality of products made and supplied by the company is well appreciated by customers. The company has been awarded the ISO 9001: 2008 certification in recognition of its excellence in Quality Management System.

Thermostats

Stem Type Thermostats

Thermostat with L bracketDetailsThermostat with Plain bracketDetails

We manufacture high quality precision heating thermostats with temperature variable knob and having different mounting options which are used in switchboards, cabinets, panels and enclosures.

Technical Characteristics

Stem length

175 mm

Temperature range of operation

25-75 °C (other ranges on request)

Tolerance on operating temperature

Within 4 °C or Customer defined

Temperature operating point of safety

Customer defined

Temperature Differential

Within 10 °C; 2 pole safety has to be manually reset

Insulation Level

1 KV for 1 min

Contact Rating

20 A, 230V resistive

Contact configuration

Opening on temperature rise

Bimetallic Thermostats

We manufacture high quality din rail mountable precision heating / cooling thermostats with temperature variable knob which are used in switchboards, cabinets, panels and enclosures.

Technical Characteristics

Thermostat Type

Heating Thermostat

Cooling Thermostat

Contact Configuration

Contacts opening on temperature rise

Contacts closing on temperature rise

Product Identification

Red coloured knob with light grey body

Blue coloured knob with light grey body

Sensor Element

Thermostatic Bimetal

Temperature Range

0 to 60 °C or 30 to 140 °F

Switching Differential

Less than 6 K at a temperature change of >1 K / min

Service life

100,000 cycles

Switching capacity

10 A resistive @ 250 V AC, 15 A resistive @ 120 V AC

Terminals

Suitable for AWG 14 ( 2.5 mm²) wires

Mounting

Clip for 35 mm DIN rail

Details

Heaters

Panel Space Heaters / Enclosure Heaters

We manufacture heaters in different ratings and sizes for enclosures, panels, cabinets & switchboards.

The heaters have the following characteristics:

 Insulation level: 2 KV for 1 min.
 Standard power tolerance : ± 3%

Construction:

 Body made of anodized heat sink grade extruded aluminium.
 High quality Kanthal resistance material is used as heating element.
 Mica is used for optimum insulation.
 Resistance element and insulation are held tight in between extruded aluminium body and squeezed.

Advantages:

 Close tolerance of electrical rating.
 Quick and uniform heating.
 Fast dissipation of heat into air.
 Withstands much higher degree of mechanical shock and vibration.
 Very good insulation resistance even in extreme humid conditions.
 Elevated body for easy passage of heat directly to air, without heating panel body.

Panel Space Heaters (End Fixing Type)

The heater is available in following lengths and electrical ratings.

Specification

Heater Length (mm)

Fixing Distance (mm)

Wattage (at 24, 48,110, 120, 220, 230, 240 or 250 Volts)

210 ± 1

190 ± 6

50, 60 & 80

240 ± 1

220 ± 6

30, 40, 100 & 120

270 ± 1

250 ± 6

150

300 ± 1

280 ± 6

180 & 200

330 ± 1

310 ± 6

Upto 250

Details

Panel Space Heaters (Middle Fixing Type)

The heater is available in following lengths and electrical ratings.

Specification

Heater Length (mm)

Wattage (at 24, 48,110, 120, 220, 230, 240 or 250 Volts)

150 ± 1

50, 60 & 80

180 ± 1

30, 40, 100 & 120

210 ± 1

150

240 ± 1

180 & 200

Details

Panel Space / Enclosure Heaters with perforated cover

We manufacture heaters in different ratings and sizes for enclosures, panels, cabinets & switchboards.

The heaters have the following characteristics:

 Insulation level: 2 KV for 1 min.
 Standard power tolerance : ± 3%

Construction:

 Body made of anodized heat sink grade extruded aluminium.
 High quality Kanthal resistance material is used as heating element.
 Mica is used for optimum insulation.
 Resistance element and insulation are held tight in between extruded aluminium body and squeezed.
 Protective Perforated cover with high quality CED coating.

Advantages:

 Close tolerance of electrical rating.
 Quick and uniform heating.
 Fast dissipation of heat into air.
 Withstands much higher degree of mechanical shock and vibration.
 Very good insulation resistance even in extreme humid conditions.
 Elevated body for easy passage of heat directly to air, without heating panel body.

The heater is available in following lengths and electrical ratings.

Heater Length (mm)

Power Cord Length

Wattage (at 24, 48,110, 120, 220, 230, 240 or 250 Volts)

248 ± 2

From 0.3 mtr to 3 mtrs

30, 40, 50, 60, 80 & 100

Details

Panel Space / Enclosure Heaters with perforated cover

We manufacture heaters in different ratings and sizes for enclosures, panels, cabinets & switchboards.

The heaters have the following characteristics:

 Insulation level: 2 KV for 1 min.
 Standard power tolerance : ± 3%

Construction:

 Body made of anodized heat sink grade extruded aluminium.
 High quality Kanthal resistance material is used as heating element.
 Mica is used for optimum insulation.
 Resistance element and insulation are held tight in between extruded aluminium parts and squeezed.
 Protective Perforated cover with high quality CED coating.

Advantages:

 Close tolerance of electrical rating.
 Quick and uniform heating.
 Fast dissipation of heat into air.
 Withstands much higher degree of mechanical shock and vibration.
 Very good insulation resistance even in extreme humid conditions.
 Elevated body for easy passage of heat directly to air, without heating panel body.

Panel Space Heaters (End Fixing Type)

The heater is available in following lengths and electrical ratings.

Specification

Heater Length (mm)

Fixing Distance (mm)

Wattage (at 24, 48,110, 120, 220, 230, 240 or 250 Volts)

210 ± 1

190 ± 6

50, 60 & 80

240 ± 1

220 ± 6

30, 40, 100 & 120

270 ± 1

250 ± 6

150

300 ± 1

280 ± 6

180 & 200

330 ± 1

310 ± 6

Upto 250

Details

Panel Space Heaters (Middle Fixing Type)

The heater is available in following lengths and electrical ratings.

Specification

Heater Length (mm)

Wattage (at 24, 48,110, 120, 220, 230, 240 or 250 Volts)

150 ± 1

50, 60 & 80

180 ± 1

30, 40, 100 & 120

210 ± 1

150

240 ± 1

180 & 200

Details

PTC Enclosure Heater Dinrail Mountable

We manufacture heaters in different ratings and sizes for enclosures, panels, cabinets & switchboards.